Pro Tools Error Ver 8.2 & snow RTAS

[E.N]

hi Guys, Looking for some help with this as it's got me stumped.
I am getting the following error message when selecting the Virus Snow Plug.

ACCESS VILATION OCCURRED, UNABLE TO READ LOCATION 0x0000000C AT ADRESS 0x2C067CE1 IN MODULES: Virus Control dll

I have uninstalled and reinstalled Ver 3.0.1, and keep hitting the same problem. I have uninstalled & re installed the drivers with the same problem.
The synth is running fine in Abelton fine.
When I look in the DAE, Plug In folder, even when I have re installed the software the Vius snow dpm files do not appear.

I have post this question at the Access site, but are very slow reply. Should I roll it back?
Your help would be most welcome. All the best E.N